CN107509255A - It is a kind of can long distance wireless charging wireless sensor network - Google Patents
It is a kind of can long distance wireless charging wireless sensor network Download PDFInfo
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- CN107509255A CN107509255A CN201610413097.8A CN201610413097A CN107509255A CN 107509255 A CN107509255 A CN 107509255A CN 201610413097 A CN201610413097 A CN 201610413097A CN 107509255 A CN107509255 A CN 107509255A
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- 238000007600 charging Methods 0.000 title claims abstract description 43
- 238000004891 communication Methods 0.000 claims abstract description 22
- 239000003990 capacitor Substances 0.000 claims abstract description 10
- 238000003860 storage Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 4
- 230000006378 damage Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
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- H02J7/025—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses it is a kind of can long distance wireless charging wireless sensor network, it is characterised in that：Including transmitting terminal and receiving terminal, the transmitting terminal includes transmitter module；The receiving terminal includes sensor node module and energy collection module；The sensor node module includes sensor unit, microprocessing unit, radio communication unit；The microprocessing unit includes A/D converter and MCU, and it connects sensor unit and radio communication unit；The energy collection module includes antenna, rectification circuit, DC/DC converters, storage capacitor and the PMU being sequentially connected；The PMU is connected with micro treatment module；The antenna connection radio communication unit and rectification circuit；The antenna is dual-band antenna.The wireless sensor network of the present invention realizes the function of long distance wireless charging, solves the problems, such as the energy supply of wireless sensor network.
Description
Technical field
The present invention relates to wireless sensor network field, especially it is a kind of can long distance wireless charging wireless sensor network.
Background technology
The self-organization and fault-tolerant ability that radio sensing network is made up of low cost, intensive, random distribution node make it because some nodes damage the collapse wireless connection of whole system will not be caused to make the influence maintenance cost of its deployment object hardly monitored very low.Therefore this network system can be widely used in the fields such as national defense and military, environmental monitoring, health care, smart home, manufacturing industry.
Although the application prospect of wireless sensor network is very fine but electric energy supply mode but turns into the big problem for restricting its development.Generally various microdevices are powered using battery, but conventional batteries have the energy supply defect that some can not change：Volume is big, quality is big, energy supply restricted lifetime and depleted of energy need recharge；Simultaneously in many wireless sensor networks, the battery of battery, even long-life type is used and replaced, it is and unpractical, because sensor node is often installed in expendable position, in addition, it is also to bear to change the workload of hundreds of batteries and cost.It is more and more huger with the extensive micro element number of network distribution, and because the operating position of some micro elements is difficult to touch again, for example battlefield animal population battery altering becomes extremely inconvenient in human body, it is even impossible, although conventional batteries improve constantly in energy storage density and service life, the energy consumption of sensor also reduces by various power-saving technologies and algorithm, but can only all extend the service life of wireless senser, and can not solve problem at all.It can be seen that it is both uneconomical or unpractical for wireless network using traditional power supply mode.
Wireless charging energy supply just becomes particularly important for wireless sensor network, and present many wireless charging modes are short distance chargings, and wireless sensor network is generally off-site from charging source, can not carry out short distance charging, the purpose of charging is not reached, it is necessary to realize long distance wireless charging energy supply.
The content of the invention
The goal of the invention of the present invention is：For above-mentioned problem, there is provided one kind converts electrical energy into electromagnetic wave, launches electromagnetic wave, while collects electromagnetic wave by antenna, is converted into electric energy, carries out the wireless sensor network of long distance wireless charging.
The technical solution adopted by the present invention is as follows：
The present invention it is a kind of can long distance wireless charging wireless sensor network, including transmitting terminal and receiving terminal, the transmitting terminal include transmitter module；The receiving terminal includes sensor node module and energy collection module；The sensor node module includes sensor unit, microprocessing unit, radio communication unit；The microprocessing unit includes A/D converter and MCU, and it connects sensor unit and radio communication unit；The energy collection module includes antenna, rectification circuit, DC/DC converters, storage capacitor and the PMU being sequentially connected；The PMU is connected with micro treatment module；The antenna connection radio communication unit and rectification circuit；The antenna is dual-band antenna, including data feedback channel and down going channel, and data feedback channel carries out information transfer, and down going channel carries out energy transmission.
In above structure, dual-band antenna can be on the basis of original signal transmission, there is provided energy transfer function, pass through wireless energy transmission technology, wireless remote power supply is provided for wireless sensor network, solve the problems, such as the energy supply of wireless sensor network, provide the electricity of abundance for it, extend the life-span of wireless senser；Because the voltage of rectification circuit output is very low, it is impossible to directly power to the load, it is necessary to which DC/DC converters are boosted；The electromagnetic wave that antenna can not only be launched with receiving end/sending end, while RF energy in the surrounding environment that the energy sources such as base station, wireless network, satellite communication, DMB, TV signal are launched can be collected, it is converted into electric energy.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the rectification circuit includes low pass filter, commutation diode and straight-through wave filter.
Above structure, commutation diode play rectification, and used is Schottky diode；The effect of straight-through wave filter is to prevent harmonic wave caused by diode and diode fore-end by the way that the direct current allowed after rectification passes through.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the low pass filter be electric capacity C1 and inductance L1 parallel connection, connect electric capacity C2 and inductance L2 parallel connection, reconnect electric capacity C3 and inductance L3 parallel connection；The straight-through wave filter is made up of electric capacity and transmission line.
Above structure, because the diode of rectification can produce higher hamonic wave, the receptivity of antenna is influenceed, therefore set low pass filter to prevent high fdrequency component, improve the efficiency of rectification；The bar shaped electric capacity that the electric capacity of straight-through wave filter is 100pF, length of transmission line is quarter-wave.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the radio communication unit is CC2420.
Above structure, radio communication unit are integrated with mu balanced circuit, impedance matching circuit, power amplifier and low-noise amplifier, and integrated level is high, and performance is good, have the function of receiving and launch, while consume energy than relatively low.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the microprocessing unit is MSP430F1611, and radio communication unit is connected by SPI interface.
Above structure, microprocessing unit controls the workflow of whole node, responsible node sampling, calculates and the task of communication, carries out the schedule of node tasks, simultaneously to energy transmission, the control of energy conversion and energy stores in energy collection module, the efficiency of collection of energy is improved.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the PMU includes the energy detector being arranged on storage capacitor, and the overvoltage crowbar and low-voltage protection circuit being arranged on battery of mobile phone；PMU detects the voltage of storage capacitor, carries out the distribution and control of electricity, while utilize the safety of overvoltage crowbar and low-voltage protection circuit protection battery of mobile phone by energy detector.
The setting of overvoltage crowbar and low-voltage protection circuit in above structure; it is because rechargeable batteries have a safe voltage upper limit, if magnitude of voltage exceedes this upper limit, some permanent damages may be caused to battery; energy collection module charges the battery; battery electric quantity is constantly lifted, if without overvoltage crowbar, can damage battery life; overvoltage crowbar has individual secure threshold; more than threshold value, charging circuit disconnects, until recovering to charge again less than secure threshold；Battery when electricity is less than some value in vivo, battery also can be therefore by some irreversible injuries, it is necessary to which to battery protect by low-voltage protection circuit.Energy detector in PMU, it is intellectual monitoring chip, for monitoring real-time charge power and state of charge.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the dual-band antenna includes paster, earth plate, dielectric substrate and feeder line；Dielectric substrate is provided with the earth plate, has paster on dielectric substrate, feeder line is connected on paster.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the transmitter module includes oscillator, modulator, upconverter, high frequency power amplifier and bandpass filter and dual-mode antenna.
In above structure, oscillator, for producing sinusoidal carrier；Modulator, for completing baseband signal to carrying wave modulation；Upconverter, passband signal is moved to required frequency range；High frequency power amplifier, for may amplify the signal to enough power and transmitting；Bandpass filter, for limiting frequency band, do not disturb adjacent channel；Dual-mode antenna, to objective emission electromagnetic wave and the sending and receiving collection of letters number.
The present invention it is a kind of can long distance wireless charging wireless sensor network, include energy transmission method：Beam forming code book is deposited into the transmitting terminal and receiving terminal into energy, there is N number of vector in code book, each vector represents a beam forming code；Antenna can predict channel condition information according to the pilot tone for the regular length that user is transmitted, and according to information, calculate the energy that user receives when using beam forming code；The maximum numbering for receiving the beam forming code under energy situation is chosen, numbering is sent to user terminal, transmitting terminal carries out energy transmission according to beam forming code corresponding to this numbering.
Above method, before energy signal transmission, first encoded, can the amount of enabling concentrate on some direction or certain several direction and be transmitted, the directionality of high energy transmission is put forward, so as to improve energy transmission efficiency.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：For existing wireless senser, the function of the existing radio communication of wireless sensor network of the invention, while there is the function of long distance wireless charging again, solve the problems, such as that wireless sensor network energy supply is difficult, while cost is low, efficiency of transmission is high.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 be the present invention it is a kind of can long distance wireless charging wireless sensor network structural representation.
Fig. 2 is the structure chart of low pass filter in the present invention.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, in addition to mutually exclusive feature and/or step, can combine in any way.
This specification（Including any accessory claim, summary）Disclosed in any feature, unless specifically stated otherwise, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics.
Such as Fig. 1, the present invention it is a kind of can long distance wireless charging wireless sensor network, including transmitting terminal and receiving terminal, the transmitting terminal include transmitter module；The receiving terminal includes sensor node module and energy collection module；The sensor node module includes sensor unit, microprocessing unit, radio communication unit；The microprocessing unit includes A/D converter and MCU, and it connects sensor unit and radio communication unit；The energy collection module includes antenna, rectification circuit, DC/DC converters, storage capacitor and the PMU being sequentially connected；The PMU is connected with micro treatment module；The antenna connection radio communication unit and rectification circuit；The antenna is dual-band antenna, including data feedback channel and down going channel, and data feedback channel carries out information transfer, and down going channel carries out energy transmission.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the rectification circuit includes low pass filter, commutation diode and straight-through wave filter.
Such as Fig. 2, the present invention it is a kind of can long distance wireless charging wireless sensor network, the low pass filter is electric capacity C1 and inductance L1 parallel connection, connects electric capacity C2 and inductance L2 parallel connection, reconnects electric capacity C3 and inductance L3 parallel connection；The straight-through wave filter is made up of electric capacity and transmission line.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the radio communication unit is CC2420.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the microprocessing unit is MSP430F1611, and radio communication unit is connected by SPI interface.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the PMU includes the energy detector being arranged on storage capacitor, and the overvoltage crowbar and low-voltage protection circuit being arranged on battery of mobile phone；PMU detects the voltage of storage capacitor, carries out the distribution and control of electricity, while utilize the safety of overvoltage crowbar and low-voltage protection circuit protection battery of mobile phone by energy detector.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the dual-band antenna includes paster, earth plate, dielectric substrate and feeder line；Dielectric substrate is provided with the earth plate, has paster on dielectric substrate, feeder line is connected on paster.
The present invention it is a kind of can long distance wireless charging wireless sensor network, the transmitter module includes oscillator, modulator, upconverter, high frequency power amplifier and bandpass filter and dual-mode antenna.
The present invention it is a kind of can long distance wireless charging wireless sensor network, include energy transmission method：Beam forming code book is deposited into the transmitting terminal and receiving terminal into energy, there is N number of vector in code book, each vector represents a beam forming code；Antenna can predict channel condition information according to the pilot tone for the regular length that user is transmitted, and according to information, calculate the energy that user receives when using beam forming code；The maximum numbering for receiving the beam forming code under energy situation is chosen, numbering is sent to user terminal, transmitting terminal carries out energy transmission according to beam forming code corresponding to this numbering.
The invention is not limited in foregoing embodiment.The present invention expands to any new feature disclosed in this manual or any new combination, and disclose any new method or process the step of or any new combination.
Claims (9)
1. it is a kind of can long distance wireless charging wireless sensor network, it is characterised in that：Including transmitting terminal and receiving terminal, the transmitting terminal includes transmitter module；The receiving terminal includes sensor node module and energy collection module；The sensor node module includes sensor unit, microprocessing unit, radio communication unit；The microprocessing unit includes A/D converter and MCU, and it connects sensor unit and radio communication unit；The energy collection module includes antenna, rectification circuit, DC/DC converters, storage capacitor and the PMU being sequentially connected；The PMU is connected with micro treatment module；The antenna connection radio communication unit and rectification circuit；The antenna is dual-band antenna, including data feedback channel and down going channel, and data feedback channel carries out information transfer, and down going channel carries out energy transmission.
2. it is according to claim 1 it is a kind of can long distance wireless charging wireless sensor network, it is characterised in that：The rectification circuit includes low pass filter, commutation diode and straight-through wave filter.
3. it is according to claim 2 it is a kind of can long distance wireless charging wireless sensor network, it is characterised in that：The low pass filter is electric capacity C1 and inductance L1 parallel connection, connects electric capacity C2 and inductance L2 parallel connection, reconnects electric capacity C3 and inductance L3 parallel connection；The straight-through wave filter is made up of electric capacity and transmission line.
4. it is according to claim 1 it is a kind of can long distance wireless charging wireless sensor network, it is characterised in that：The radio communication unit is CC2420.
5. it is according to claim 1 it is a kind of can long distance wireless charging wireless sensor network, it is characterised in that：The microprocessing unit is MSP430F1611, and radio communication unit is connected by SPI interface.
6. it is according to claim 1 it is a kind of can long distance wireless charging wireless sensor network, it is characterised in that：The PMU includes the energy detector being arranged on storage capacitor, and the overvoltage crowbar and low-voltage protection circuit being arranged on battery of mobile phone；PMU detects the voltage of storage capacitor, carries out the distribution and control of electricity, while utilize the safety of overvoltage crowbar and low-voltage protection circuit protection battery of mobile phone by energy detector.
7. it is according to claim 1 it is a kind of can long distance wireless charging wireless sensor network, it is characterised in that：The dual-band antenna includes paster, earth plate, dielectric substrate and feeder line；Dielectric substrate is provided with the earth plate, has paster on dielectric substrate, feeder line is connected on paster.
8. it is according to claim 1 it is a kind of can long distance wireless charging wireless sensor network, it is characterised in that：The transmitter module includes oscillator, modulator, upconverter, high frequency power amplifier and bandpass filter and dual-mode antenna.
9. it is according to claim 1 it is a kind of can long distance wireless charging wireless sensor network, it is characterised in that：Also include the method for energy transmission：Beam forming code book is deposited into the transmitting terminal and receiving terminal into energy, there is N number of vector in code book, each vector represents a beam forming code；Antenna can predict channel condition information according to the pilot tone for the regular length that user is transmitted, and according to information, calculate the energy that user receives when using beam forming code；The maximum numbering for receiving the beam forming code under energy situation is chosen, numbering is sent to user terminal, transmitting terminal carries out energy transmission according to beam forming code corresponding to this numbering.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610413097.8A CN107509255A (en) | 2016-06-14 | 2016-06-14 | It is a kind of can long distance wireless charging wireless sensor network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610413097.8A CN107509255A (en) | 2016-06-14 | 2016-06-14 | It is a kind of can long distance wireless charging wireless sensor network |
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| CN201610413097.8A Withdrawn CN107509255A (en) | 2016-06-14 | 2016-06-14 | It is a kind of can long distance wireless charging wireless sensor network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108337722A (en) * | 2018-02-28 | 2018-07-27 | 华东交通大学 | A kind of Rechargeable wireless sensor network nodes |
| CN108600989A (en) * | 2018-04-24 | 2018-09-28 | 华北水利水电大学 | Train radio charge sensors manage system |
| CN110120711A (en) * | 2019-04-17 | 2019-08-13 | 电子科技大学 | Autonomous dynamic radio electric energy reception device and method based on time reversal |
| CN113330642A (en) * | 2019-01-16 | 2021-08-31 | 威利奥特有限公司 | Proximity sensor based on local oscillator frequency |
-
2016
- 2016-06-14 CN CN201610413097.8A patent/CN107509255A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108337722A (en) * | 2018-02-28 | 2018-07-27 | 华东交通大学 | A kind of Rechargeable wireless sensor network nodes |
| CN108337722B (en) * | 2018-02-28 | 2024-05-17 | 华东交通大学 | Chargeable formula wireless sensor network node |
| CN108600989A (en) * | 2018-04-24 | 2018-09-28 | 华北水利水电大学 | Train radio charge sensors manage system |
| CN113330642A (en) * | 2019-01-16 | 2021-08-31 | 威利奥特有限公司 | Proximity sensor based on local oscillator frequency |
| CN110120711A (en) * | 2019-04-17 | 2019-08-13 | 电子科技大学 | Autonomous dynamic radio electric energy reception device and method based on time reversal |
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Application publication date: 20171222 |